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This study provided a novel supercritical methanol transesterification process with little amount of CH3ONa catalyst to synthesize biodiesel from soybean oil by response surface technology. The maximum biodiesel yield was 97.42% under the optimal conditions of 250°C, methanol to oil molar ratio of 23:1, 1.0wt% CH3ONa and 20min. Temperature was proved to have the most significant effect on transesterification,...
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